#include<bits/stdc++.h>
using namespace std;
const int N = (int)3e3 + 5;
int n, m, cnt[2][N][N];
char s[N][N];
long long ans;
int main () {
ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
cin >> n >> m;
for (int i = 1; i <= n; ++i) {
for (int j = 1; j <= m; ++j) cin >> s[i][j];
}
for (int i = n; i > 0; --i) {
for (int j = m; j > 0; --j) {
cnt[0][i][j] = cnt[0][i][j + 1] + (s[i][j] == 'O');
cnt[1][i][j] = cnt[1][i + 1][j] + (s[i][j] == 'I');
if (s[i][j] == 'J') ans += cnt[0][i][j] * cnt[1][i][j];
}
}
cout << ans;
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
376 KB |
Output is correct |
| 2 |
Correct |
2 ms |
376 KB |
Output is correct |
| 3 |
Correct |
2 ms |
376 KB |
Output is correct |
| 4 |
Correct |
3 ms |
504 KB |
Output is correct |
| 5 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 6 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 7 |
Correct |
3 ms |
1396 KB |
Output is correct |
| 8 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 9 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 10 |
Correct |
3 ms |
1400 KB |
Output is correct |
| 11 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 12 |
Correct |
3 ms |
1448 KB |
Output is correct |
| 13 |
Correct |
3 ms |
1400 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
376 KB |
Output is correct |
| 2 |
Correct |
2 ms |
376 KB |
Output is correct |
| 3 |
Correct |
2 ms |
376 KB |
Output is correct |
| 4 |
Correct |
3 ms |
504 KB |
Output is correct |
| 5 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 6 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 7 |
Correct |
3 ms |
1396 KB |
Output is correct |
| 8 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 9 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 10 |
Correct |
3 ms |
1400 KB |
Output is correct |
| 11 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 12 |
Correct |
3 ms |
1448 KB |
Output is correct |
| 13 |
Correct |
3 ms |
1400 KB |
Output is correct |
| 14 |
Correct |
12 ms |
7544 KB |
Output is correct |
| 15 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 16 |
Correct |
9 ms |
4344 KB |
Output is correct |
| 17 |
Correct |
3 ms |
504 KB |
Output is correct |
| 18 |
Correct |
14 ms |
8008 KB |
Output is correct |
| 19 |
Correct |
14 ms |
7928 KB |
Output is correct |
| 20 |
Correct |
12 ms |
7804 KB |
Output is correct |
| 21 |
Correct |
13 ms |
8056 KB |
Output is correct |
| 22 |
Correct |
13 ms |
7928 KB |
Output is correct |
| 23 |
Correct |
12 ms |
7928 KB |
Output is correct |
| 24 |
Correct |
14 ms |
7976 KB |
Output is correct |
| 25 |
Correct |
12 ms |
7972 KB |
Output is correct |
| 26 |
Correct |
12 ms |
7828 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
376 KB |
Output is correct |
| 2 |
Correct |
2 ms |
376 KB |
Output is correct |
| 3 |
Correct |
2 ms |
376 KB |
Output is correct |
| 4 |
Correct |
3 ms |
504 KB |
Output is correct |
| 5 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 6 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 7 |
Correct |
3 ms |
1396 KB |
Output is correct |
| 8 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 9 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 10 |
Correct |
3 ms |
1400 KB |
Output is correct |
| 11 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 12 |
Correct |
3 ms |
1448 KB |
Output is correct |
| 13 |
Correct |
3 ms |
1400 KB |
Output is correct |
| 14 |
Correct |
12 ms |
7544 KB |
Output is correct |
| 15 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 16 |
Correct |
9 ms |
4344 KB |
Output is correct |
| 17 |
Correct |
3 ms |
504 KB |
Output is correct |
| 18 |
Correct |
14 ms |
8008 KB |
Output is correct |
| 19 |
Correct |
14 ms |
7928 KB |
Output is correct |
| 20 |
Correct |
12 ms |
7804 KB |
Output is correct |
| 21 |
Correct |
13 ms |
8056 KB |
Output is correct |
| 22 |
Correct |
13 ms |
7928 KB |
Output is correct |
| 23 |
Correct |
12 ms |
7928 KB |
Output is correct |
| 24 |
Correct |
14 ms |
7976 KB |
Output is correct |
| 25 |
Correct |
12 ms |
7972 KB |
Output is correct |
| 26 |
Correct |
12 ms |
7828 KB |
Output is correct |
| 27 |
Correct |
227 ms |
88068 KB |
Output is correct |
| 28 |
Correct |
26 ms |
26104 KB |
Output is correct |
| 29 |
Correct |
19 ms |
7800 KB |
Output is correct |
| 30 |
Correct |
3 ms |
632 KB |
Output is correct |
| 31 |
Correct |
176 ms |
72696 KB |
Output is correct |
| 32 |
Correct |
216 ms |
88396 KB |
Output is correct |
| 33 |
Correct |
211 ms |
88184 KB |
Output is correct |
| 34 |
Correct |
201 ms |
84260 KB |
Output is correct |
| 35 |
Correct |
221 ms |
88460 KB |
Output is correct |
| 36 |
Correct |
211 ms |
88272 KB |
Output is correct |
| 37 |
Correct |
242 ms |
88524 KB |
Output is correct |
| 38 |
Correct |
159 ms |
72604 KB |
Output is correct |
| 39 |
Correct |
157 ms |
72340 KB |
Output is correct |
